#include "../common/etcd.hpp"
#include <gflags/gflags.h>
#include <thread>
#include <brpc/server.h>
#include <butil/logging.h>
#include "main.pb.h"


DEFINE_bool(run_mode, false, "程序的运行模式， false-调试； true-发布；");
DEFINE_string(log_file, "", "发布模式下，用于指定日志的输出文件");
DEFINE_int32(log_level, 0, "发布模式下，用于指定日志输出等级");

DEFINE_string(etcd_host, "http://127.0.0.1:2379", "服务注册中心地址");
DEFINE_string(base_service, "/service", "服务监控目录");
DEFINE_string(instance_name, "/echo/instance", "当前实例名称");
DEFINE_string(access_host, "127.0.0.1:7070", "当前实例外部访问名称");
DEFINE_int32(listen_port, 7070, "Rpc服务器监听端口");

class EchoServiceImpl : public example::EchoService {
    public:
        EchoServiceImpl(){}
        ~EchoServiceImpl(){}
    virtual void Echo(google::protobuf::RpcController* cntl_base,
                    const ::example::EchoRequest* request,
                    ::example::EchoResponse* response,
                    ::google::protobuf::Closure* done) {
        brpc::ClosureGuard rpc_guard(done);
        std::cout << "收到消息:" << request->message() << std::endl;

        std::string str = request->message() + "--这是响应！！";
        response->set_message(str);
        // done->Run();
    }
};

int main(int argc, char *argv[])
{
    google::ParseCommandLineFlags(&argc, &argv, true); 
    init_logger(FLAGS_run_mode, FLAGS_log_file, FLAGS_log_level);

    // 服务端改造思想：
    // 关闭brpc的默认日志输出
    logging::LoggingSettings settings;
    settings.logging_dest = logging::LoggingDestination::LOG_TO_NONE;
    logging::InitLogging(settings);
    // 1.构造服务器对象
    brpc::Server server;
    // 2.乡服务器对象中，新增EchoService服务
    EchoServiceImpl echo_service;
    int ret = server.AddService(&echo_service, brpc::ServiceOwnership::SERVER_DOESNT_OWN_SERVICE);
    if(ret == -1)
    {
        std::cout << "添加Rpc服务失败！\n";
        return -1;
    }
    // 3.启动服务器
    brpc::ServerOptions options;
    options.idle_timeout_sec = -1; // 连接空闲超时时间-超时后连接被关闭
    options.num_threads = 1; // io线程数量
    ret = server.Start(FLAGS_listen_port, &options);
    if(ret == -1)
    {
        std::cout << "启动服务器失败！\n";
        return -1;
    }
    // 5.注册服务；
    Registry::ptr rclient = std::make_shared<Registry>(FLAGS_etcd_host);
    // 注册的是 /service/echo/instance;  发现的是 /service/echo
    rclient->registry(FLAGS_base_service + FLAGS_instance_name, FLAGS_access_host);
    
    server.RunUntilAskedToQuit();   // 休眠等待运行结束
    return 0;
}